/*
 * Copyright 2010 Yannick Stucki (yannickstucki.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.yannickstucki.android.musicqueue.ui;

import com.yannickstucki.android.musicqueue.communication.OnUiUpdateListener;

/**
 * For the main music player, there is only one activity (due to performance and
 * rotation reasons). However, behaviour and UI can be changed by changing the
 * screen mode.
 * 
 * @author Yannick Stucki (yannickstucki@gmail.com)
 * 
 */
public interface IScreenMode {

  /**
   * Returns a listener that the screen mode reacts to whenever there is a
   * change in music play back. Returns null if the screen mode is not
   * interested in reacting to those changes.
   */
  OnUiUpdateListener getOnUiUpdateListener();
}
